Electric Motors
| Frame | 254/6T |
|---|---|
| Output | 7.5 HP (5.5 kW) |
| Number of Poles | 6 |
| Frequency | 60 Hz |
| Rated speed | 1175 rpm |
| Slip | 2.08 % |
| Rated voltage | 208-230/460 V |
| Rated current | 21.0-19.0/9.48 A |
| L. R. Amperes | 143-129/64.5 A |
| LRC | 6.8x(Code H) |
| No load current | 7.76-9.00/4.50 A |
| Rated torque | 33.1 ft.lb |
| Locked rotor torque | 250 % |
| Breakdown torque | 300 % |
| Locked rotor time | 54s (cold) 30s (hot) |
| Moment of inertia (J) | 3.92 sq.ft.lb |
|---|---|
| Design | B |
| Insulation Class | F |
| Temperature rise | 80 K |
| Duty Cycle | Cont.(S1) |
| Starting Method | Direct On Line |
| Ambient temperature | -20°C to +40°C |
| Altitude | 1000 m.a.s.l. |
| Degree of Protection | IP55 |
| Enclosure | IC411 - TEFC |
| Mounting | F-1 |
| Rotation¹ | Both (CW and CCW) |
| Noise level² | 59.0 dB(A) |
| Approx. weight³ | 335 lb |
(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.
Efficiency
| 50% | 75% | 100% |
|---|---|---|
| 89.5 | 90.2 | 91.0 |
Power factor
| 50% | 75% | 100% |
|---|---|---|
| 0.63 | 0.74 | 0.80 |
Features
| Frame Material | Cast Iron |
|---|---|
| Impregnation Method | Dip and Bake Polyester |
| Regreasing System | At Drive end and Non-drive end |
| Main terminal box hole | NPT 1 1/2" |
| Terminal Block | Without |
| Shaft Locking Device | Without |
| Drain | Rubber, automatic |
| Shaft Material | SAE 1040/45 Carbon Steel |
| Painting | RAL 5009 203A (ISO 12944 - C2) |
| Grounding Lugs | Single |
| Fan Cover material | Cast Iron |
| Tropicalized Painting | Without |
| Fan material | Aluminum |
| Brake Type | WEG - 235.0 Nm |
| Brake input Voltage | 220-240 V |
| Bearing cap | Yes- Bearing Cap |
| Balancing Method | 1/2 Key |
| Drip Cover | Without |
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Bearing details
| Drive End | Non Drive End | |
|---|---|---|
| Bearing type | 6309 C3 | 6209 C3 |
| Sealing | V'Ring | Lip Seal |
| Lubrication interval | 20000 h | 20000 h |
| Lubricant amount | 13 g | 9 g |
| Grease Type | Mobil Polyrex EM | |
Foundation loads
| Max. traction | Max. compression |
|---|---|
| 314 lb | 650 lb |
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